Cock or valve



(No Model.)

J. POWELL. 000K 0R VALVE.

Patente-d Aug FIG.

FIG-6'.

y I E N. FUCHS. Phow-mhegrapher. washingtnn, D. C.

UNITED STATES PATENT OFFICE.

JAMES PO\VELL, OF CINCINNATI, OHIO.

COCK OR VALVE.

SPECIFICATION forming part of Letters Patent No. 409,334, dated August 20, 1889.

Application filed August 3l, 1888. SerialNo. 284,229. (No model.)

To all whom t may concern.-

Be it known that I, JAMES POWELL, a citizen of the United States of America, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and Auseful Improvements in Cocks or Valves, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to those cocks or other similar appliances which are provided with a pair of valves that wedge against opposing seats in the act of being advanced or closed, and are retracted or drawn back within achainber when open, so as to afford a straight and uninterrupted passage through the inclosing shell or housing, to which latter the pipes or other conduits are secured; and my improvement comprises a novel combination of devices for producing such a wedging action of the valves. Of these devices the principal memberis a removable expansion-plate Afitted within the valve-chamber of the shell and provided with a port of practically the saine diameter as the channels of said shell and in line with said channels. This expansion-plate is generally furnished with a ridge above the port and a pair of inclined bearings below said port, which ridge and bearings eoact in simultaneously wedging the valves against their respective seats, each valve be ing loosely coupled to a carrier actuatedV by an ordinary valve-stem. The stem is operated either by a screw or lever or cam, or other convenient instrumentality, in order that these carriers may be either advanced or retracted for the purpose of either closing or opening the valves, as hereinafter more fully described.

' In the annexed drawings, Figure lshows the various parts of my cock separated from each other, the cap, expansion-plate, valves, and carriers being seen in elevation and the shell being sectioned transversely. Fig. 2 is a vertical section of the cock, the valves being closed against their respective seats. Fig. 3 is a similar section of a portion of the cock, the valves being completely retracted. Fig. 4l is a horizontal section through the expansion-plate and a portion of the shell. Fig. 5

is an enlarged horizontal section through a modification of the valve and carrier. Fig.

6 is a vertical section of the eXpansion-plate- The shell, housing, globe, or casing of the cock, valve, or other similar appliance for controlling the flow of water, steam, gas, dac., consists, essentially, of a pair of pipe ends A A and a central valve-chamber B, said pipe ends being traversed by the customary channels a a', which are axially in line with each other. The opposite sides of chamber B are grooved at l) b to admit guides c c of the eX- pansion-plate C, the latterbeing pierced with a port D of practically the same diameter as the channels d d', said plate having a ridge E above said port anda pair of inclined bearings F F below it, as more clearly seen in Fig. 0. Furthermore, this ridge E is cut away, at e, for a purpose that will presently appear.

G represents one of the pair of valve-carriers, the outer face of said carrier being chambered eylindrically at g to permit free play of a disk-valve lvl, loosely coupled to said carrier by a ball-bearing h. The rear edges ot' this carrier are grooved vertically, as at I I in Fig. 5, to allow said carrier to travel along the guides c c otl the expansion-plate C. Moreover, the back of this carrier has at top an inclined bearing .I and at bottom a cham'fered edge j, as more clearly seen in Fig. 3.

K is a semicircular socket in the upper part of this carrier. The other carrier L has a precisely similar chamber Z, disk-valve IWI, ball-bearing in, vertical grooves N N inclined bearing O, chamtered edge o, and semicircular socket P, the sockets K P of these carriers being adapted to grasp a disk or button R at the inner end of the valve-stein S, which is here shown as having a screwthreaded connection with the cap T. This cap engages with a threadt on the upper end of valvechamber B. When this cock' is fitted together, the expansion -plate C is simply dropped into the valve-chamber B, the contact of the guides c c with the lower ends of the grooves b b serving to arrest said plate where its port D will be in line with the channels a a. The valves H M are then applied to their respective carriers G L, and the sockets K P of the .latter are engaged around IOO the button R. These parts are now held together and lowered within the chamber B, care being taken to cause the grooves I I and N N of the carriers to slide along the guides c c of plate C, after which act the cap T is attached to the shell or casing. When the valve-stein S is elevated or retracted, as seen in Fig. 3,the carriers G L depend freely from the disk R, the valves II M being now raised so far as to permit a direct unobstructed passage through the channels a a and port D. To shut oft the flow, the stem S is lowered or advanced, as seen in Fig. 2, during which movement the chamfered edges ,7' 0 of the carriers come in contact with the inclined bearings F F of plate C at the same time that the inclined bearings J O of said carriers are sliding down the ridge E. Consequently the valves II M are simultaneously and uniformlyT forced outwardly, and by the time the carriershave completed their stroke said valves are firmly wedged against their respectiveseats V V. In this closed condition of the cock the button R enters the notch e of ridge E, thereby enabling a.snug fitting of all the parts and causing the shell to be as small and compact as possible. The valves automatically adjust themselves, provided the seats are not exactly parallel or in case' the cock is not accurately fitted together, which action is due to the fact that said valves are loosely coupled to their carriers, and therefore they will shift in any direction.

Reference to Figs. 2 and 3 shows that a passage U is left between the bottom of the expansion-plate and the chamber B,`which passage allows a flow of steam or water to occur when the valves are first opened, and thus preventscutting of the port D. Again, these illustrations show the ball-bearings 7L m as passing completelythrough the carriers; but in Fig. 5 the socket for the ball 7L is comparatively shallow, and therefore said ball does not project beyond the back of the carrier G.

IVhile I have described the expansionplate as occupying grooves in the opposite sides of the valve-chamber, it is to be distinctly understood that the invention is not confined to this specific construction, but the l right is reserved of retaining said plate in position by any other suitable means, or of allowing it to be loose in a certain class of cocks, as the closing of the valves will centralize the plate immediately. In another' modification the sides of the plate C may slope from top to bottom, as indicated by the dotted-lines ff in Fig. G, which construction will be especially desirable when the carriers are omitted and the valves arranged to act directly against said plate.

I claim as my invention- I. The combination, in a cock or valve, of a shell having a pair of channels and opposing valve-seats, inclined bearings within the shell above and below the axis of said valveseats, and a pair of valves which are forced outwardly against said seats by sliding contact with said inclined bearings, substantially as described.

2. The combination, in a cock or valve, of a shell having a pair of channels and opposing valve-seats, a removable expansion-plate fitted within a chamber of said shell and provided with a port, a ridge, and a pair of inclined bearings, and a pair of valves which are forced outwardly against said seats by contact with said ridge and inclined bearings, substantially as described.

The combination, ina cock or valve, of a shell having a pair of channels and opposing valve seats, a removable expansion plate fitted Within a chamber of said shell and provided with a port, a ridge, and a pair of inclined bearings, a pair of valves loosely coupled to carriers .having inclined bearings and chamfered edges, and means for coupling' said carriers to the operating-stein, substantially as described.

4. The combination, in a cock or valve, of a shell having a pair of channels a a and opposing seats V V', a removable expansionplate C c c', fitted within a valve-chamber B of said shell and provided with a port D, ridge E, and inclined bearings F F', a pair of valves H M, looselyv coupled to carrier G L, having inclined bearings J O and chamfered edges j 0, and means, as the sockets K P, for coupling said carriers to thedisk R of an operating-stem, substantially as herein described.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES POWELL..

Titnessesz JAMES I-I. LAYMAN, SAML. S. CARPENTER.

IOO 

